This user's guide describes the characteristics, operation, and use of the ADS9813 and the ADS9817 evaluation modules (EVM). These are evaluation platforms for the ADS9813 and ADS9817, respectively. Both devices are 8-channel, 18-bit, 2-MSPS per channel, successive approximation register (SAR) analog-to-digital converters (ADC). The EVMs ease the evaluation of the ADS9813 and ADS9817 devices with hardware, software, and computer connectivity through the universal serial bus (USB) interface. This user's guide includes complete circuit descriptions, schematic diagrams, and a bill of materials (BOM). Throughout this document, the terms demonstration kit, evaluation board, evaluation module, and EVM are synonymous with the ADS9813EVM and the ADS9817EVM.
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The ADS9813EVM and the ADS9817EVM are platforms for evaluating the performance of the ADS9813 and ADS9817 SAR ADCs, both of which include a PGA front-end to support input voltages of ±12 V, ±10 V, ±7 V, ±5 V, ±3.5 V, and ±2.5 V, both in single-ended and differential configurations. Both ADC cores support 18-bit resolution at 2-MSPS/channel. The ADS9813 ADC features a simultaneous-sampling input structure, while the ADS9817 ADC features a multiplexed input structure.
Both the ADS9813EVM and ADS9817EVM include a standard FMC connector on the bottom of the PCB. The FMC connector can be used to mate with standard FPGA kits, including the TSWDC155EVM (sold separately). The TSWDC155EVM is a digital controller board that is necessary for the included EVM software GUI to communicate with the device, graph measured results, and compute common figures of merit (for example, SNR and THD).
The following related documents are available for download through the Texas Instruments web site at www.ti.com.